Vebiyanti, E. N., N. Septiryani, and L. Desiana. “Cash on Delivery (COD) System in Online Transactions: An Analysis from an Islamic Economic Perspective”. NIZAM: International Journal of Islamic Studies, vol. 2, no. 1, Apr. 2024, pp. 19-31, https://journal.csspublishing.com/index.php/nizam/article/view/1034.